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Author:Wang, Zijun 

Working Paper
Is value premium a proxy for time-varying investment opportunities: some time series evidence

We uncover a positive, empirical risk-return tradeoff in the stock market after controlling for the covariance of stock market returns with the value premium. The underlying premise is that, as conjectured by Fama and French (1996), the value premium is a proxy for time-varying investment opportunities. By ignoring the value premium, early specifications suffer from an omitted variable problem that leads to a downward bias in the estimate of the risk-return tradeoff. The paper also documents a new finding on a significantly positive relation between the value premium and its conditional ...
Working Papers , Paper 2005-026

Working Paper
Does aggregate relative risk aversion change countercyclically over time? evidence from the stock market

Using a semiparametric estimation technique, we show that the risk-return tradeoff and the Sharpe ratio of the stock market increases monotonically with the consumption wealth ratio (CAY) across time. While early studies have commonly interpreted such a finding as evidence of the countercyclical variation in aggregate relative risk aversion (RRA), we argue that it mainly reflects changes in investment opportunities for two reasons. First, we fail to reject the null hypothesis of constant RRA after controlling for CAY as a proxy for the hedge against changes in the investment opportunity set. ...
Working Papers , Paper 2006-047

Working Paper
International transmission of inflation among G-7 countries: a data-determined VAR analysis

We investigate the international transmission of inflation among G-7 countries using a data-determined vector autoregression analysis, as advocated by Swanson and Granger (1997). Over the period 1973 to 2003, we find that U.S. innovations have a large effect on inflation in the other countries, although they are not always the dominant international factor. Similarly, shocks to some other countries also have a statistically and economically significant influence on U.S. inflation. Moreover, our evidence indicates that U.S. inflation has become less vulnerable to foreign shocks since the early ...
Working Papers , Paper 2004-028

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